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Assuming that a neutron star has the same density as a neutron, calculate the mass (in {\rm kg}) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.16 mm
the equilibrium constant kc for the following reaction is 7.00e-5 at 673 k. calculate kp for this reaction at this
what is the mass in mg of 2.5 x 1018 atoms of americium-241 present in the smoke detectors if a tiny speck of
A 4.20L sample of neon gas at 15 degrees C is at a pressure of 790mmHg. If the gas is compressed to 1.50L and the temperature of the gas is raised to 195 degrees C, what will the new pressure be
What colume will 500 mL of gas at 20 degrees celsius and a pressure of 420 mm Hg occupy if the temperature is reduced to -80 degrees celsius
A compound with the molecular weight of 391.98 was determined to be 3.1 % Hydrogen, 31.5 % Phosphorous, and 65.4% Oxygen. Determine the empirical formula and molecular formula for the compound.
Calculate the number of moles of gaseous nitrogen contained in a sample of 227 mL of gas saturated with water vapour at 20 °C and 90.0 kPa.
What is the molality of a solution formed by dissolving 1.70 mol of KCl in 15.0 mol of water (MM of water = 18.02 g/mol),
A mixture of gases contains 4.32 g of Ar, 7.88 g of BF3, and 4.86 g of N2. What is the partial pressure in atm of each component of this mixture if it is held in a 61.3-L vessel at 10.9 oC? Use R = 0.0821 L-atm/mol-K as the value of the gas consta..
Draw the structures for each of the following fatty acids: a.) trans-5-Decenoic acid b.)cis-5-Decenoic acid
Classify each of the following binary compounds by the oxidation number of hydrogen. NH3 CaH2 MgH2 H2O HCl NaH H2 CH4
Calculate the potential of the following cell and indicate whether the reaction is expected to be spontaneous. Cr + 3 Ag+ ---> Cr3+ + 3Ag
Calculate the number of millimoles of HCl needed to reach the methyl orange end point. b. How many millimoles of Na2CO3 reacted with the HCl?
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